PSN-L Email List Message

Subject: Re: Seismic exhibit for kids
From: Larry Cochrane cochrane@..............
Date: Thu, 17 Aug 2000 20:34:16 -0700


I am forwarding your questions to the PSN mailing list. Several PSN members
have setup display like the one you would like to create. 

PSN members- Please respond to Murray directly (mskuce@............. since
he is not on the list.

-Larry Cochrane
Redwood City, PSN
At 11:08 AM 8/16/00 -0700, you wrote:
>Looking around on the WWW I see that you've contributed a lot on amateur
>seismic stuff so am hoping you may have some ideas on how best to tackle
>this project we have in hand.
>We're working on an exhibit (for Ontario Power Generation) where kid's can
>jump up and down to create their own "earthquakes". Yes, we know, this is
>nothing like the real thing.  
>What we want to show is simply that the Richter scale is a log scale (not
>linear) - analagously, that if you tap you foot and get a reading and then
>jump as hard as you can and get a larger reading, that he factor difference
>here is maybe 30 to 50,  or say, 3.0 Richter to 4.3 Richter.  - the
>extension of this being that a 7Richter is really really big difference.  
>People commonly assume that an R5 event is not much smaller than R7 quake
>because they don't realize they are dealing with logarithmic notation.
>We're trying to make that difference physically tangible with the exhibit,
>as well as giving kid the simple fun of seeing the feedback of  their
>physical action.
>We have a PS2 unit from Kinemetrics (developed originally by Tom Pike, I
>believe) here for testing.  They have been really helpful.  But it appears
>that we will have to get and alter the source code used in the software
>that comes with the product and after talking to Mel Lund there this seems
>like it may present problems -  not technical to do with release of the code.
>Our question is, then, should we be using or building some other hardware
>that will run with open-source software or is more directly suited to our
>needs?  Or, to anyone's knowledge, is there software (for which code is
>available) which is compatible with the PS2 black box output?  I've been
>unable to reach Tom Pike to ask him this.
>Our thanks in advance for any suggestions you might have.
>very best, Murray Skuce
>Skuce Design Associates
>1046 Odlum Drive
>Vancouver, B.C.
>V5L 3L6
>(604) 253 1414

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Larry Cochrane <cochrane@..............>